The procedure begins with anesthesia, a probe is threaded along the fistula from the outside to the inside and a thick thread is passed through the fistula, the skin between the inner and outer orifices is incised and the thread is hooked up to drain the fistula. Different procedures, such as ligation of fistula between the sphincter, visual assisted system of anal fistula treatment, surgical procedures are not exactly the same. 1. Trans-sphincter fistula ligation: the operation steps of this procedure are mainly trans-sphincter fistula ligation to close the inner mouth, standardized removal of the lesion of the anal glands, and then according to the requirements of the closure of the fistula on both sides of the sphincter. In the sphincter fistula and sphincter fistula clinical treatment has a very significant effect. 2. Visual auxiliary system under the anal fistula treatment: the operation of the procedure is guided by the visual auxiliary system, the fistula through the fistuloscope to observe the fistula, the location of the internal mouth and the fistula branching pattern, etc., in the field of vision, the use of electrode knife to remove the fistula, and then use the straight line anastomosis on the internal mouth treatment. This procedure helps to reduce the degree of damage to the perianal tissues, promote postoperative wound healing, and reduce the degree of pain. Minimally invasive anal fistula surgery can further improve the patient’s surgical treatment effect, reduce surgical trauma, shorten hospitalization time. It is recommended to go to the regular hospital for treatment in time.